He stopped in front of one large group of younger rats.

Both he and the younger rat were carrying bundles of it.

And some of the young rats'll be runners, so you can keep in touch!

A note on fear behavior in young rats, mice, and birds.

And on top of everything else the young rats were spending too much time worrying about.

It started off: "Once there was a young rat who couldn't make up his mind.

Some of the younger rats had suggested that perhaps clothes were more important than everyone thought.

That'd mean any young rat would know as much as him!

A lot of the young rats were keen on taking baths.

That has been observed in an experiment with young and old rats.